package net.cjw.initsb.utils;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5Util {
	public static String getMD5(String str) {
		String result = "";
		try {
			MessageDigest md = MessageDigest.getInstance("MD5");
			md.update(str.getBytes());
			byte b[] = md.digest();
			int i;
			StringBuffer buf = new StringBuffer("");
			for (int offset = 0; offset < b.length; offset++) {
				i = b[offset];
				if (i < 0)
					i += 256;
				if (i < 16)
					buf.append("0");
				buf.append(Integer.toHexString(i));
			}
			result = buf.toString();
			// System.out.println("MD5(" + str + ",32) = " + result);
		} catch (NoSuchAlgorithmException e) {
			e.printStackTrace();
		}
		return result;
	}

	public static void main(String[] args) {
		System.out.println("结果: " + MD5Util.getMD5("123"));
	}
}
//结果: 202cb962ac59075b964b07152d234b70
